单项选择题
eNodeB通过以下那条信令下发切换命令？（）
A.RRC Connection Reconfiguration
B.RRC Connection Setup
C.DL Information Transfer
D.RRC Connection Reestablishment
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单项选择题
A.RRC Connection Reconfiguration
B.RRC Connection Setup
C.DL Information Transfer
D.RRC Connection Reestablishment
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